子进程Tornado捕获退出状态

import tornado.ioloop
import tornado.web
import subprocess

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        # 创建子进程
        process = subprocess.Popen(['ls', '-l'], stdout=subprocess.PIPE)
        # 等待子进程结束，并获取退出状态
        exit_status = process.wait()
        self.write("子进程退出状态: {}".format(exit_status))

def make_app():
    return tornado.web.Application([
        (r"/", MainHandler),
    ])

if __name__ == "__main__":
    app = make_app()
    app.listen(8888)
    tornado.ioloop.IOLoop.current().start()